The National Weather Service has issued a weather advisory in effect from 9 p.m. Wednesday through 9 a.m. Thursday for southwest and central Idaho and eastern Oregon.
A strong cold front moving into the region late Wednesday afternoon will bring wind gusts up to 25 mph and rain turning to snow overnight.
Once the cold front moves in the snow level will drop from 3,900 feet to 2,700 feet, which is about Boises elevation.
The Valley could get 1 to 3 inches of snow overnight.
Cold temperatures will stick around for at least another week, with daytime highs in the upper 20s dropping to the teens or single-digits at night.